Integrated Services Digital Network (ISDN) - Telephony 7 kHz, videotelephony, audiographic conference and videoconference teleservices - Digital Subscriber Signalling System No one (DSS1) protocol - Part 4: Abstract Test Suite (ATS) and partial Protocol Implementation eXtra Information for Testing (PIXIT) proforma specification for the user
Edition 2001-06-01

Integrated Services Digital Network (ISDN) - Telephony 7 kHz, videotelephony, audiographic conference and videoconference teleservices - Digital Subscriber Signalling System No one (DSS1) protocol - Part 5: Test Suite Structure and Test Purpose (TSS&TP) specification for the network
Edition 2001-06-01

Integrated Services Digital Network (ISDN) - Telephony 7 kHz, videotelephony, audiographic conference and videoconference teleservices - Digital Subscriber Signalling System No one (DSS1) protocol - Part 6: Abstract Test Suite (ATS) and partial Protocol Implementation eXtra Information for Testing (PIXIT) proforma specification for the network
Edition 2001-06-01

Integrated Services Digital Network (ISDN). Technical characteristics of telephony terminals. Part 1: general
Edition 1996-12-01

Integrated Services Digital Network (ISDN). 3,1 kHz telephony teleservice. Attachment requirements for handset terminals
Edition 1992-12-01

Integrated Services Digital Network (ISDN) - Technical characteristics of telephony terminals - Part 7: locally generated information tones
Edition 1999-12-01

Telephony for hearing impaired people. Inductive coupling of telephone earphones to hearing aids
Edition 1997-12-01

Terminal Equipment (TE) - Telephony for the hearing impaired - Electrical coupling of telephone sets to hearing aids
Edition 2000-02-01

Integrated Services Digital Network (idsn). Telephony 3,1 kHz teleservice. Service description
Edition 1995-07-01

Integrated Services Digital Network (ISDN). Telephony 7 kHz teleservice. Service description
Edition 1995-11-01